QIBOX Replacement USB Charger Cable for Fitbit Surge Wireless Activity Bracelet Fitness Super Watch Charging Cable Cord Charge QIBOX Authentic Charger for Fitbit Surge Fitness Superwatch Different from other unauthentic poor quality charging cables, it has a PTC inside to prevent your Fitbit Surge from being damaged by overcurrent. It is fully functional just as the original cable Fits perfectly for your Fitbit Surge Superwatch Made of ROHS materials. Premium quality guaranteed.